Name
Abstract | ||
|---|---|---|
This paper considers a blind channel shortening approach based on subcarrier nulling criteria to mitigate the effect of interblock interference in uplink OFDMA systems. We derive a sufficient condition for a method known as carrier nulling algorithm (CNA) to shorten individual uplink user channels. Unlike several known methods, CNA can shorten channels in time domain even if there are many null subcarriers, and is hence suitable for uplink OFDMA in which individual user signals can be modeled as standard OFDM that includes multiple null subcarriers. In addition, we also develop a semi blind implementation of CNA by exploiting potential pilot symbols. The semi blind approach uses the simple idea of treating known pilot subcarriers in the same way as null subcarriers. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TSP.2012.2185230 | IEEE Transactions on Signal Processing |
Keywords | Field | DocType |
OFDM modulation,channel estimation,frequency division multiple access,interference (signal),time-domain analysis,CNA,blind channel shortening approach,individual uplink user channels,individual user signals,interblock interference,multiple null subcarriers,pilot subcarriers,potential pilot symbols,semi blind implementation,subcarrier nulling algorithms,sufficient condition,time domain,uplink OFDMA systems,Blind equalization,interblock interference,subcarrier nulling,time-domain equalization | Subcarrier,Time domain,Communication channel,Algorithm,Interference (wave propagation),Frequency-division multiple access,Blind equalization,Mathematics,Orthogonal frequency-division multiplexing,Telecommunications link | Journal |
Volume | Issue | ISSN |
60 | 5 | 1053-587X |
Citations | PageRank | References |
6 | 0.56 | 18 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Teruyuki Miyajima | 1 | 59 | 13.46 |
| Zhi Ding | 2 | 1574 | 109.20 |